Find the value of x in each case.

Given f(x) = 2x^2- 5x+1, determine the function value f(2). do not f(x) = in your answer

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?

Change negative exponents to positive. then solve. round to four decimal places